"Heavy armor+" in Underhaul 2.0 is made using Heavy armor + 50 Electronic circuits, and provides a small equipment grid.
I believe it's the only thing stopping the two mods from working together, and they would otherwise be a good fit.
Trying to load them produces this error:
Failed to load mods: __Pacifist__/functions/recipes.lua:193: Didn't handle ingredient heavy-armor(armor) of recipe uh_heavy-armor-plus
stack traceback:
[C]: in function 'assert'
__Pacifist__/functions/recipes.lua:193: in function '_process_ingredients'
__Pacifist__/functions/recipes.lua:207: in function 'process'
__Pacifist__/functions/pacifist.lua:25: in function 'process'
__Pacifist__/data-final-fixes.lua:5: in main chunk
The mod loads fine when the "Remove gridless armor" startup setting is turned Off.